Water-heater.



PATBNTED SEPT. 1, 1903. G. J. SBBALD & 0. F. SCHMIDT.

WATER HEATER. v APPLIPATION FILED FEB. 16, 1903.

NO MODEL.

WITNESSES: IN VEN TORS ATTORNEYS.

GEORGE J. SEBALD AND GIIARLES F. SCHMIDT, OF MILWAUKEE, Wiscons n enema V I V Uinirssn Snares Patented September 1, 1963.

PATENT OFFICE.

Wares-seminal SIIJCIFICATION forming m; of Letters Patent No. 737,784, dated. September 1,1903. Application filed February 16. 1903. serial No. 1%.4822 (No model.)

{[0 all whom it may concern:

.Be it known that we, GEORGE J. SEBALD and CHARLES F. SCHMIDT, citizens of the United States, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, haveinvented new and useful Improvements in Water-Heaters, of which the following is a specification.

Our invention relates to improvements in water-heaters for domestic purposes; and it [pertains to that class of so-called in-stair drawings; in whichtaneous heaters by which a "thinfilxn of water is forced through a narrow spirallyfornied chamber, the walls of which are heated to a high temperature, whereby the water in passing from the hydrant or other reservoir under pressure through the circulating chamber to the discharge-faucet is heated to the desired temperature as fast as it is drawn.

The construction of our invention is explained by reference to theaccompanying Figure 1 represents a vertical section of. the circulating-water chamber of our device removed from its inclosuren Fig. 2 reprecents a vertical section of our heater, including two 0irculatiniechambors and their inclosiug walls; and Figs. 3 and 1- represent modified forms of the device for forming the spiral partitions of the circulating-cha1nber.

Like parts are identified by the sam'ereferonce-letters throughout the several views.

A is a circulating-chamber into the lower end of which water is admitted from the hydrant through the pipe B, when it passes upwardly in a spiral course through the spiral" channel 0 until it reaches the upper end tof said chamber A, when it passesfrom thence into theinterior circulating chamber D, through the duct E, and from said duct E it passes downwardly in a spiral course through the spiral channels 0 and F until it reaches the lower end of said circulatiug-chamber-D, when it passes outwardly through the discharge-pipe G to the place of discharge.

1 The chauiberA co prises the two conical:

shaped vortical wallsi l and I, while the space. between said walls is subdivided into a spiral channel Oby the spiral partition K, whereby the water in passing from the inlet to the outlet Got the heater is pascd to traverse a spiral course upwardly through the circulat ing-chamber A and downwardly through the circulating-chamber D. The-partition K is preferably formed of wire, sis-indicated in,

Figs. 1 and2, which wire is, when-constructing the heater, first wound in a spiral course from one end to theother of the inner wall J of the circulating-chamber, when it is thus secured in place, preferably with solder, when the exterior wall I is forced over the coils of said wire from thesmaller toward the larger end of the inner c'onicalshaped wall, when owing' to the conical shape of there spective walls I. and J they are drawn-firmly against and around the-partitiou-wire K as. they are being thus forced together, whereby a tight joint is formed between said par tition-wire and the respective walls I and J:

whichcauses the water to circulate through the channels 0 and h, stated, in passing fronion'e end to the other of the respective circuletting-chambers. To more securelyre tain said spiral partition K in place, the walls I and J are preferably provided with spiral corrugations a a, as indicated upon the re specti ve sides of said partition-wire, whereby said wire retained between the opposing concave surfaces of said walls and whereby a closer joint is formed between SllQlI parts.

To economize material, the partitions K may, if desired, be formed, as indicated in Figs 3 and 4, of sheet metal, which is first cut into narrow strips and then bent into the desired shape to serve as a partition. InFig.

3 the partition is formed by bending the strip into a T shape, comprising the central bend and the two right-angular bends M, while the form of partition shown in Fig. 4 is made firom a narrow strip of sheet metal, which is bent in a rectangular shape, (indicated at N.) qt will be obvious, however, that the fiorrfi 'of thepartition may be varied indefinitely without departing from the spiritof our inven-,

I 'tion to the number-0f eirc of our device will inner circulating-chamber I), whereby the fuel is used with" the reatest economy,

Vv'hile We have ehown chemhermwe do not wishe to irni't our-invenr ,in'g-ehzimliere need nor to the epeoiii'c arrangement- 02" said; chambers with each other and the inclosnre, as it is obvious that the number of circnlat. ing-chnni here may he i nereaned or diminished to meet the requirement -ofthe ne'er. it oh en-tin capacity will also be obvious that t he lHCFQILSE'Ii by increasing the number of eircnlating-chninhers cmploy'ed and the It will he nnderstood that by connectingthe inlet wnterduet in the rior circulating-chnznher all Witter passing through the heater will be com polled to pass in {b spiral coarse flOil'l the .loworemi oi. {mill first circnlating-chamber lo iii-l npncr 0nd and from thence downwardly throngh the inlerior ci cl'zln'tingnl mi channel suec lower end of seiil escape. I

While we have shown the inlet-pipe con nected with the exterior rcnlzttingr-chaln-ber and the ootlot-pipe oon'nected with the into rior cireulnting-chamber it trill no understood that the same result mny he Obtained hy connecting the inlet water-(hint "with the interior chamber. anal the outlet 'rvnIor-(lnct 13' until it reaches: the inner cnnmher before it can ,ejiect thehent two circulating area of the herming snrfeces, ..of the m. onionng chninbere.

manner elzoiv'nw'ith the exte with the exterior chamber, as in either case all the water will be compelled to pass through all the channels of the respective circulatingchambers before it escapes therefrom.

Having thus described our invention, what ive claim as new, and desire to secure by Letters Patent, is

1. In a wetezwheater, 2r circulating-chamber comprising two spirally-grooved conical eheped wells, one located within the otherend connected together at; their respective ends;

a spiral pa rtition located in said spiral grooves between the opposing walls ofsaid chamber, substantially as set forth.

2. In a, waiter-heater of the class described,

deflector located within the-innermost of said circulating-chemhers; an exterior inelosing well arranged concentric to said circulatingchambers a combustion-chamber; a. plural ity of. series of burners, located beneath the lower ends of said circulating-chamber s, said series being adopted respectively to register with the space between the said circulatingchzimbers, and between .seid chambers and l heir inclusion walls; aninlet-dnct comm unicating from the water-supply under pressure with one of said circulating-chambers at its lower end; a water-duct communicating from said first-named circulatin 'g -oliz mherto the;

next in the series, at their upper ends; and a, water-duct communicating from' the lower end of the second circulating-chamber with the exterior; all substantially as and for the p11 rpose specified.

In iesti m ony whereof we nil'ix our signature! in the presence of two \vitm-esesi.

GEORGE .l. SEllALD. CHARLES F. SCHMIDT.

W itncsses:

LEVERET'I. 0. WHEELER Mann G. Wnnmmn. 

